The research analyzed data from over 8,000 U.S. adults and found that 14% had absolute iron deficiency while 15% exhibited functional iron deficiency where the body cannot properly utilize iron. Also, the study found that the prevalence of functional iron deficiency was found to be higher than that of absolute iron deficiency across most demographics, except women under 50 years old.
Iron deficiency can lead to a range of health issues, affecting both cognitive and physical performance.The study also reported that iron supplement use is relatively low with only 22% to 33% of individuals with iron deficiency utilizing supplements.